Alarm sensor for the undercarriage of automobiles



FIG. 1 is a bottom plan view of an alarm sensor for the undercarriage of automobiles showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a right side elevational view thereof, the left side being a mirror image of the right. 

The ornamental design for an alarm sensor for the undercarriage of automobiles, as shown and described. 